public IFragment[] Process(ITriangle triangle)
{
IVertexOutputData[] clips = triangle.points;
Vector2[] screens = Array.ConvertAll <IVertexOutputData, Vector2>(
clips,
(IVertexOutputData each) => new Vector2((each.clip.x / each.clip.w * 0.5f + 0.5f) * screenWidth, (each.clip.y / each.clip.w * 0.5f + 0.5f) * screenHeight)
);
int[][] iscreens = Array.ConvertAll <Vector2, int[]>(
screens,
(Vector2 each) => new int[] { MathS.Clamp((int)each.x, 0, mScreenWidth - 1), MathS.Clamp((int)each.y, 0, mScreenHeight - 1) }
);
int[][] pixels = scan.ConvexFill(iscreens);
if (pixels != null)
{
IVertexOutputData[] v2fs = Array.ConvertAll <int[], IVertexOutputData>(
pixels,
(int[] each) => gour.Triangle(clips, screens, each)
);
IFragment[] frags = new Fragment[v2fs.Length];
for (int pIndex = 0; pIndex < v2fs.Length; pIndex++)
{
IFragment frag = new Fragment();
frag.pixel = pixels[pIndex];
frag.color = fragShade.Process(v2fs[pIndex]);
frags[pIndex] = frag;
}
return(frags);
}
return(null);
}
/// <summary>
/// 球面插值
/// </summary>
/// <param name="q1">单位四元数</param>
/// <param name="q2">单位四元数</param>
/// <param name="t">0--1</param>
/// <returns>单位四元数</returns>
public static Quaternion Slerp(Quaternion q1, Quaternion q2, float t)
{
Quaternion uq = q1;
t = MathS.Clamp(t, 0, 1);
float dot = Quaternion.Dot(q1, q2);
if ((1 - dot) > Threshold)
{
float radian = MathS.Acos(dot);
if (radian < 0)
{
radian = MathS.PI - radian;
}
float sin = MathS.Sin(radian);
float t1 = MathS.Sin((1 - t) * radian) / sin;
float t2 = MathS.Sin(t * radian) / sin;
uq = q1 * t1 + q2 * t2;
}
return(uq);
}
public static Vector2 Lerp(Vector2 from, Vector2 to, float t)
{
t = MathS.Clamp(t, 0, 1);
return((1 - t) * from + t * to);
}
/// <summary>
/// 线性插值
/// </summary>
/// <param name="q1"></param>
/// <param name="q2"></param>
/// <param name="t"></param>
/// <returns></returns>
public static Quaternion Lerp(Quaternion q1, Quaternion q2, float t)
{
t = MathS.Clamp(t, 0, 1);
return(q1 * (1 - t) + q2 * t);
}
